6results about How to "Delay thermal runaway" patented technology

This invention belongs to the field of batteries, specifically a single-cell battery and a high-capacity battery, overcoming the technical difficulties of high cost and heavy weight in existing high-capacity batteries. The single-cell battery includes a casing, which is formed by an upper cover plate, a cylindrical body, and a lower cover plate. The upper cover plate, cylindrical body, and lower cover plate are all made of plastic, and their strengths are all P, where P1≤P≤P2. P1 represents the strength requirement of the casing during the formation stage and normal charge / discharge stages; P2 represents the strength requirement of the casing during thermal runaway. At least one of the upper cover plate, cylindrical body, and lower cover plate has a sub-tube segment, which communicates with the inner cavity of the casing. The high-capacity battery includes a pressure-bearing casing and single-cell batteries arranged within the pressure-bearing casing. Corresponding sub-tube segments in adjacent single-cell batteries are sealed and connected to form a shared pipeline. The single-cell battery of this invention is low in cost and lightweight, and the pressure-bearing casing meets the strength requirements of the casing during thermal runaway.

This invention belongs to the field of batteries, specifically a high-capacity battery assembly. It overcomes the technical challenges of high cost and heavy weight inherent in existing high-capacity batteries. The assembly includes a pressure-bearing casing and a high-capacity battery and heat exchange device located within the casing. The high-capacity battery comprises a shared pipeline and n individual cells arranged along the x-direction, with their internal cavities connected by the shared pipeline. Each individual cell has a plastic casing with a strength P, where P1 ≤ P ≤ P2. P1 represents the strength requirement of the casing during the formation stage and normal charge / discharge stages, while P2 represents the strength requirement during thermal runaway. The pressure-bearing casing has a vent connected to the shared pipeline. The heat exchange device is located at the top of the high-capacity battery, with the polarity terminals of each individual cell passing through it. Compared to finished battery cells, the individual cells of this invention offer advantages in terms of light weight and low cost.

This invention provides an immersion-type energy storage battery housing, belonging to the field of energy storage technology. It includes a cold plate housing, a lower shell, and a top cover. Coolant flows inside the cold plate housing, placing the battery cell modules and the immersion liquid within a closed cavity formed by the cold plate housing, lower shell, and top cover. The immersion liquid insulates the battery cell modules from oxygen. Through heat conduction, the coolant exchanges heat with the immersion liquid, thereby cooling the battery cell modules. This immersion-type energy storage battery housing provides a non-flowing immersion liquid while allowing the coolant to circulate. This avoids problems caused by immersion liquid flow, effectively reducing thermal runaway of the battery cell modules, lowering safety risks, maintaining consistent temperature of the battery cell modules, and extending the service life of the energy storage system.

This application provides a battery thermal management control method, apparatus, electronic device, and storage medium. The method acquires the cell temperature generated by Joule heating within the battery device and the surface temperature of the battery top cover. If a first difference between the surface temperature and the cell temperature is greater than a preset temperature threshold, the battery device is heated to increase its temperature, and the surface temperature is corrected based on a first temperature correction coefficient to make the first difference less than or equal to the preset temperature threshold. If a second difference between the cell temperature and the surface temperature is greater than the preset temperature threshold, the battery device is cooled by heat dissipation, and the surface temperature is corrected based on a second temperature correction coefficient to make the second difference less than or equal to the preset temperature threshold. By combining heating or heat dissipation with a temperature correction coefficient, temperature fluctuations are controlled within the preset threshold, effectively avoiding battery performance degradation caused by temperature deviations, minimizing the risk of localized overheating or overcooling of the cell, and reducing the probability of thermal runaway.

This invention belongs to the field of battery technology. It provides a lithium-manganese battery, its manufacturing method, and an electrical device. The positive electrode active material in the positive electrode sheet of the lithium-manganese battery includes manganese dioxide. The separator of the lithium-manganese battery includes a base film and a functional coating disposed on the base film. The functional coating includes a mixture of inorganic solid electrolyte and aramid fiber. By combining the solid electrolyte and aramid fiber to form the functional coating on the base film, on the one hand, more uniform positive and negative electrode interface contact can be provided, promoting efficient ion transport; on the other hand, the inorganic solid electrolyte is non-flammable, and combined with the high strength characteristics of aramid fiber, the separator formed after coating can significantly reduce the risk of thermal runaway or fire in the battery.